Is The Duke, Rebel Sentry legal in Standard, Modern, and Commander?

The Duke, Rebel Sentry is legal in: Legacy, Vintage, Commander, Historic.

The Duke, Rebel Sentry

Q: What type of card is The Duke, Rebel Sentry?

The Duke, Rebel Sentry is a Legendary Creature — Human Rebel Ally. Its oracle text reads: "The Duke enters with a +1/+1 counter on him. {T}, Remove a counter from The Duke: Put a +1/+1 counter on another target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)"

Legendary Creature — Human Rebel Ally

The Duke enters with a +1/+1 counter on him.

, Remove a counter from The Duke: Put a +1/+1 counter on another target creature you control. It gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)